The Post spoke to several aviation experts about a number of factors that may have contributed to the fatal collision.

The aircraft that collided in Washington, D.C., were a Bombardier CRJ700 jet operated as American Eagle Flight 5342 by PSA Airlines and a U.S. Army Sikorky UH-60 Black Hawk helicopter.

Aviation attorney Jim Brauchle told Fox News Digital that a "combination" of factors could have led to the deadly collision ...

Through maps, videos, photos and radio transmissions, CNN is piecing together what occurred during the deadly, midair collision.